Self-adjustable wrench



l. 1. SHORT.

SELF ADJUSTABLE WRENCH.

APPLICATION FILED JUNE 13. 1919.

"1,332,922." v V Patented Ma1'.9,1920.

' wrench.

VIRA J; sHoR'r, or ARoHBfoLn. onto.

l fsELmAnJUsTABLn WREiioH;

To all whom it mag concern:

Be it known that I, IRA J. SHORT, a clt zen a of the United States of America, residing at v production of a simple and efficient means y go for holding the pressure spring. in engage- Archbold, in the county ot'j'Fulton and State of Ohio, have ,inve'nted certain new and 1 useful Improvements in Self-Adjustable lVrenches, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to self adjusting wrenches and has for its object the produc tionof a simple and eflicient means for causingthe adjustable jaw to automaticallyadf just itself around a nut, pipe or other device.

which is desired to grip by means ofthe Another. object of this invention is the ment with the adjustable jaw supporting links. r i

A still further object of this invention is the production of simple and efficient means for supportingfthe gripping plates in en-c gagement with the respective jaws.

Inthe drawings 1 Figure 1 is a sideelevation of the wrench; a plan view of the back portion 7? ofthe wrench.

3 Fig. 3. as

Fig. 3 is a vertical section throughthe jaws of the wrench.

Fig. 4 is a section'taken Fig. 5 is a detail perspective view of the I jaw of the wrench. r r Fig.6 is a perspective view looking at the rear facev of the gripping plate carried by r the adjustable j aw.

By referring to the "drawings it will be; seenthat 1 designates the handle of the wrench, which comprises a stationary jaw2,

which jaw 2 is provided with. an elongated notch 3 upon its inner face and a cut-out portion4 within which cut-outportion 4 fits the gripping plate 5 of the stationary 'jaw.

This gripping plate 5 is provided with a plurality of gripping teeth 6 upon the inner face of the plate 5 for firmlvgripping or biting into-a nut or other obiects notched therebv. This platev 5 is provided with an inwardlv extending rib 7 which rib 7. fits within the groove 3, formed in the jaw 2 and is firmly held therein by. means of the rivets 8.

The shankor handle is provided with a 7 link receiving channel orgroove 9 upon, its I i l Specification of Letters fatent. -P tnt; Elan Application fil'ediJune 13,1919. serial 1 ,303,893. 1 j

against the shoulder-19 formed in the 'ad- 170i the gripping plate 18. Tlie forwar'd endof the plate 18 is thickened and rests justable jaw 14 thereby relieving cOIlSid61- able strain from the securing pin 20. The I plate lS is provided with a longitudinally v W extending slot 21- to permit the link, 10 to" work freelywithin the channel or slot 15 and also to permit a' wide gripping face" to be had upon the plate 19"when the is ina forwardly or outwardly swung posi-' tion. a. f-

. compressing spring 221is carried by the handle 1 and is provided with a coiled-portion 23 fitting. snugly within the notch or I groove 9. The inner end 24'of the spring 22 is firmly seated within a socket 25 in the handle 1 and a transversely extending anchoring pin 26 passes through the handle i 1 and through the looped portion or coil 23 on line H of.

of the spring 22 therebyholding the spring 22 withinthe channel or groove 9. The

coiled-portion 23 of the spring 22 fits snugly within this channel or groove 9 and is thereby held against any loose swinging org. 7

. tilting inovementvwithin the channel .or "groove 9. j The coiled-portion 23 of the spring 22 however is suflicientlyloose within the channelor groove 9 to permit'the spring 22 to unwind or'windupon this coiled-portion 23. The pin 26 also is sufiiciently loose 'to permit the coil spring to slide therearound. The spring 22 is provided with a forwardly extending'portion '27 whichten] minates in an upwardly and outwardly extending portion'28, this upwardly and outwardlv extending portion'28iformed in a laterally extendingportion '29.

What i is claimed is :Q

1. A'wrench comprising astationarv jaw, '7

I an adiustablejaw, links connecting saidadjustable jaw with said stationary jaw, said. stationary jaw provided with an elongated slot, a coil spring placed within said elonf gated slot and projecting therefrom, said coil spring provided-with a forwardly eX-- tending portion terminating in a laterally" extending end, said laterally extending end engaging one out said links and urging the same forwardly L j In a wrench of with a central longitndinally-extending soekettormed' inits inner edge, a pair of links having a set of ends positioned. down insaidsoeket, fastening means extending throu 'h the 'aw and said links within the j b I l soeicet iastening the links to the aw, an adjustable jaw provided with a longitudinallyextending groove said links having one set of their ends in said groove of the adjustable. V aw, means fastening said last-mentioned in said socket fastening the spring therein,

l V the class described; the combination of a handle provided with an integral SEQUOHZIIY jaw, said aw provided said positioning of the coil entirely'within said socket preventing wabbling of the springand d1splaoenient of 1ts' outer, free end off the back edge of the link, substantially 7 a as shown and described. j I j 3. A wrench comprising a stationary aw,

an adjustable aw, means for connecting said adjustable jawwith said stationary aw,

said adjustable jaw provided with a shoulder formed thereon, a gripping plate carried by said adjustable jaw and engaging said shoulden'said gripping plate provided with a rib formed upon the under face thereof said adjustable jaw provided with a socket formed therein for reeeivino' said rib, said stationary jaw provided with a groove, a spring provided with a coil-portion seated within said groove for holding'said spring from tilting, and said springprovided with means for engaging said adjustable jaw and rl oreing the saine forwardly In testimony whereof I hereunto afiix my signature.

IRA J. SHORT. 

